Supplier<? extends ActivationFile.Builder> creator,
                    ActivationFile.Builder builder,
                    ActivationFile target) {
                String path = target.getMissing();
                String xformed = transformPath(path, target, "missing");
                return xformed != path ? (builder != null ? builder : creator.get()).missing(xformed) : builder;
            }

            } finally {
                stk.pop();
            }
        }

        @Override
        protected ActivationOS.Builder transformActivationOS_Name(
                Supplier<? extends ActivationOS.Builder> creator, ActivationOS.Builder builder, ActivationOS target) {
            stk.push(nextFrame("name"));
            try {